Depending on your airline, you would land at different terminals at Taipei Taoyuan Airport (TPE) . Singapore Airlines and Eva Air uses Terminal 2, while Scoot uses Terminal 1. Both terminals have its own metro station, known as A13 Airport Terminal 2 and A12 Airport Terminal 1 respectively.
There will also be a upcoming new station A14 Airport Terminal 3. For now, the rides from A13 and A12 to A14a Airport Hotel are free for E-tickets users which I guess is great for travelers that is stopping in Taiwan briefly!
We took Scoot airline, which landed us in Terminal 1. It is a short walk (5-10 mins) with signages in place guiding us on how to get to the Taoyuan Metro in the airport. A12 Airport Terminal 1 station was very clean and modern looking.